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drm/tinydrm/mipi-dbi: Add mipi_dbi_enable_flush()

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Add and use a function for enabling, flushing and turning on backlight.

Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Reviewed-by: David Lechner <david@lechnology.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180110185940.53841-4-noralf@tronnes.org
This commit is contained in:
Noralf Trønnes
2018-01-10 19:59:36 +01:00
parent 24e05e7a82
commit 22edc8d38b
5 changed files with 24 additions and 11 deletions
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20
drivers/gpu/drm/tinydrm/mipi-dbi.c
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@@ -270,6 +270,26 @@ static const struct drm_framebuffer_funcs mipi_dbi_fb_funcs = {
.dirty = mipi_dbi_fb_dirty,
};
/**
* mipi_dbi_enable_flush - MIPI DBI enable helper
* @mipi: MIPI DBI structure
*
* This function sets &mipi_dbi->enabled, flushes the whole framebuffer and
* enables the backlight. Drivers can use this in their
* &drm_simple_display_pipe_funcs->enable callback.
*/
void mipi_dbi_enable_flush(struct mipi_dbi *mipi)
{
struct drm_framebuffer *fb = mipi->tinydrm.pipe.plane.fb;
mipi->enabled = true;
if (fb)
fb->funcs->dirty(fb, NULL, 0, 0, NULL, 0);
tinydrm_enable_backlight(mipi->backlight);
}
EXPORT_SYMBOL(mipi_dbi_enable_flush);
/**
* mipi_dbi_pipe_enable - MIPI DBI pipe enable helper
* @pipe: Display pipe